Condensation trap



March 13, 1928.

D. s. GARCIA CCNDENSATION TRAP Filed 31.12.10. 1927 INVENTOR. DA W0 ,6.GARCIA.

A TTORNEYS.

5 43 x4 v3 9 2 I A 3 m w. -i 45;! w f--- o M 2 M H Patented Mar. 13,1928.

DAVID S. GARCIA, F OAKLAND, CALIFORNIA.

CONDENSAIION TRAP.

Application filed August 10, 1927. Serial No. 211,963.

This invention relates to condensation ejector traps of the typedisclosed in a prior patent issued to me Au ust 17, 1926 bearing#1,596,1T2 entitled (londensation ejector a trap.

It is the principal object of the present invention to generally improvethe construction and operation of devices of the character referred towhereby to provide an effilfi cient condensation ejector trap capable ofcontinuous operation to drain any amount of condensation rapidly fromequipment at any temperature or pressure, and assisting rather thanretarding the circulation of the steam,

15 resulting in more heat efficiency and no loss of live steam; thedevice being designed with no wearing parts, and capable of adjustmentto give any desired capacity.

One form which the invention may assume 0 is exemplified in thefollowing description and illustrated by way of example in theaccompanying drawings, in which:

Fi 1 is a side elevation of a device embodying the preferred form of myinvention. Fig. 2 is a longitudinal section through the devicedisclosing its construction.

Referring more particularly to the accompanying drawings 1 havedisclosed therein a condensation ejector which may be inserted in theexhaust steam line for the removal of condensation from steam processingor heating equipment.

As illustrated the device comprises a cylindrical shell having aremovable inlet head 11 at one end and a removable outlet head 12 at itsopposite end. As here shown each head is shouldered and provided with anextcriorly threaded cylindrical portion of reduced diameter adapted tothreadedly conncct the head to the end of the shell 10.

The interior of the shell is divided into four chambers by means ofpartition Walls 14, 15 and 16. The chambers in which the shell isdivided are a receiving chamber 17,

a spray chamber 18. liquefaction chamber 19 and an ejector chamber 20.It will be noticed that the receiving chamber 17 is at the receiving endof the shell while the ejector chamber 20 is at the outlet end of theshell.

Communication is established between the two through the medium ofintermediate devices hereinafter described, so that the vapor andcondensate will pass through the inlet head 11' through the device. Forthis. purpose the inlet and outlet heads 11 and12 are provided withports 21 and 22 which are tapped so that the device may be interposed inthe exhaust steam line of any desired apparatus.

Arranged within the receiving chamber 17 is a pipe 2?) \vhch is arrangedat right angles to the axis of the shell. At its lower end this pipe 23is fitted with a street L 24 which is threaded into a port 25 in thepartition wall 14. This port 25 is located contiguous to the outercircun'iference of the partition 14 as illustrated. At the other orupper end of the pipe 23 it is fitted with a non-clogging strainer 26.The position of this strainer 26 makes it necessary that the receivingchamber 17 be almost full of water at all times; thus providing a waterseal over the inlet port 21 of the shell. This chamber 17 also acts as asediment chamber as any sediment passing into the shell through the port21 cannot pass through the screen or strainer 26 and will collect at thebottom of the chamber 17. This sediment may be removed from time to timethrough the plugged drain opening 27.

Steam and condensate entering the receiving chamber 17 passes throughthe strainer 26 downwardly through the pipe 23 and enters a similar pipe28 arranged in the spray chamber 18. This pipe 28 is also arranged atright angles to the longitudinal axis of the shell and its lower end isplaced in communication with the pipe 23 of the receiving chamber 17through the medium of an elbow 29. The other or upper end of the pipe 28extends to a point almost on the level with the strainer 26 and isfitted with a conical spray nozzle 30. Hence, steam and condensatepassing through the strainer 26 and pipe 23 will pass into the pipe 28and discharge into the chamber 18 through the spray nozzle 30.

The spraying action taking place causes the steam and water to again mixfreely. Consequently the force of the spray causes the water toevaporate rapidly. Th s evaporation of the condensate is accompanied bythe disappearance of a large quantity of heat and frequently by adiminution of temperature, which brings a change of sensible into latentheahfand of kinetic into potential energy again causing the vapor andcondensate to 't Ym'porarily displace in chamber 18.

A given amount of water in aeroform condition occupies nearly 1700'times as much space under a pressure of one atmosphere as it does inliquid form. That is, one

tially filled with water to form a steam seal, an ejector nozzlearranged within the ejector chamber through which fluid passes into theejector chamber. and valve means for controlling the discharge of fluidthrough the ejector nozzle.

Q. A condensation ejector trap comprising a shell having an inlet portat one end an( an outlet port at the opposite end, said shell beinginteriorly partitioned to provide a receiving chamber and an ejectorchamber, a conduit arranged in the receiving chamber for conveying fluidfrom the receiving chamber, one end of said conduit being open andfitted with a strainer and disposed above the inlet port whereby a waterseal will be provided in the receiving chamber, the other end of saidconduit being closed in the receiving chamber and directing the fluidthrough said partition. an ejector nozzle arranged in the ejectorchamber to convey fluid into the ejector chamber. and valve means torcontrolling the di charge of tluid through said ejector nozzle into theejector chamber.

3. A condensation ejector trap comprising a shell having an inlet portat one end am an outlet port at the other end, said shell beinginteriorly partitioned to provide a receiving chamber. a spray chamberand an ejector chamber. a strainer arranged in the receiving chamber anddisposed above the inlet port. a spray nozzle arranged in the spraychamber on substantially the same plane as the strainer, fluidconducting means connecting the strainer with the spray nozzle. theposition of said strainer and spray nozzle causing a fluid level in thereceiving chamber and spray chamber sullieient to maintain a steam seal.said spray nozzle being restricted whereby to retard the low of thetluid through the spray chamber. an ejector nozzle in the ejectorchamber through which fluid passes into the ejector chamber from theprevious chambers. and valve means controlling the discharge of 'tluidthrough said ejector nozzle.

4. A condensation ejector trap eoniprising a shell having an inlet portat one end and an outlet port at its opposite end. said. shell beinginteriorly divided into a receiving chan'iber. a spray chamber. alitpietaction chamber and an ejector chamber. a strainer in thereceiving chamber above the inlet port, a spray nozzle in the spraychamber on the plane of the strainer. conduit connecting the strainerwith the spray nozzle. said conduit extending below the inlet port andthrough the partition dividing the receiving chamber from the spraychamber. a tube in the liquefaction chamber communicating at its lowerend with the spray chamber contiguous to the bottom of the spraychamber. an orifice in the side of said tube above the center of theliquefaction chamber and directed toward the succeeding partition. atube in the ejector chamber comn'iunicati[1g at its lower end with thebottom of the liquefaction chamber. said tube having an orifice thereinsubstantially in alignment with the outlet port. and valve means torcontrolling the elt'cctive area of said orifice.

5. A condensation ejector trap comprising a cylindrical shell havingremovable head members at opposite ends. the head member at one endbeing formed with an inlet port, the head member at the other end beingformed with an outlet port. said ports being arranged on the axis of theshell. said shell being interiorly divided by partitions into areceiving chamber. a spray chamber. a. liquefaction chamber and anejector chamber. the receiving chamber being contiguous to the inletport and the ejector chamber cont ignous to the outlet port. a strainerwithin the upper end of the receiving chamber. a conduit arranged atright angles to the axis ot the shell and connected with the receivingchamber at one end. the other end being directed through the adjacentpartition. a conduit in the spray chamber arranged in parallelism withthe conduit in the receiving chamber. the lower ends of said conduitbeing connected. the upper end of the conduit in the spray chamber beingtitted with a restricted spray nozzlc. a conduit in the liquefactionClltllll' ber arranged at right angles to the axis of the shell andcommunicating at its lower end with the lower end of the spray chamber.the upper end of the conduit in the liquefaction chamber being closed.said conduit in the liquefaction chamber being termed with an orifice inits side directed toward the succeeding partition and being disposedabove the center of the shell. a conduit in the ejector chamber arrangedat right angles to the axis of the shell and cominunicating at its lowerend with the lower end of the liqnetaction chamber. said conduit in theejector chamber being formed with an orifice substantially on the axisof the shell and directed toward the outlet port. a valve controllingsaid orifice. and means extcriorly ot' the shell for operating saidvalve to control the ett-ective area of said orifice.

DAVID S. GARtlA.

